In earlier builds of Windows 10, this was possible from the Personalization -> Color and Appearance menu. However, "Color and Appearance" seems to have been removed from the final build. Is it still possible to change the taskbar color? How?
Yes, it is possible to change the color of the taskbar. It will change the color of the Start menu and action center as well though.
Right click on the desktop, then select Personalize.
On the left side select Colors.
Turn Off Automatically pick an accent color from my background and then choose the color you want.
Now below that, turn On Show color on Start, taskbar, and action center.